Muriel Gerard returns from church with her mother one Sunday morning to find that her husband, Andrew - a former DCS from Scotland Yard, has been shot dead. She informs Nick who arrives with Kate who confirms the death. A huge murder hunt then starts and two detectives from the Met - a DCI Merton and DC Langdon are sent up from London to take charge of the investigation. Langdon whose an old friend of Nick's stays with him and Kate at the police house. Its thought that Gerard was killed by an old criminal who he'd put away who was now free and wanting their revenge. But after questioning from Langdon suspicion falls on his wife -Muriel. Nick hears from Alex via Kate that Gerard was known for beating Muriel and so it's thought that she just killed him in anger for her pain and misery over the years. However when she is arrested and taken to the station Nick realizes that Muriel's mother - Victoria Wainwright is in fact the murderer and goes to see her and she confesses to it. She couldn

There is an outbreak of sheep rustling and one of the victims who is renowned for naming his sheep accuses Greengrass of the crime. Greengrass ends up in court and is convicted, but Nick discovers holes in the evidence and realizes that Greengrass had been set up. Meanwhile Alan Maskell who is on bail does a runner to London. But unknown to him his wife Sandra suffers a miscarriage at the same time. Nick in the meantime is asked to go for an interview to join the drug squad team at Scotland Yard, which would guarantee a promotion to Sergeant. He decides to go for the interview despite Kate opposing the idea of returning to London. Whilst there he promises Sandra that he'll find and bring back Alan. Whilst in London Nick finds Alan in a night club, then there's a drugs raid by police and Nick sees them plant the evidence. Nick is arrested along with everyone else. Nick later files an official complaint about the officer in charge of the raid. He's then offered the job with the drug squa